Filled-sack-sewing machine



0. (a. THOMPSON. FILLED SACK SEWING MACHINE.

APPiLICATION flLED'AUG-fi, 1920.

Patented Jan. 17, 1922.

3 SHEETSSHEET I.

C. G. THOMPSON- FILLED SACK SEWING MACHINE.

APPLICATION ill-ED AUGSI 1920- 1,403,922, Patented Jan; 17, 1922.

3 SHEETS-SHEET 2.

c. G. THOMPSON.

FILLED SACK SEWING MACHINE. APPLICATION FILED AUG-6, 1920.

1,403,922, Patented Jan. 17,1922.

3 SHEETS-SHEET 3.

UNITED STATES CARL G. THOMPSON, 0F KNOXVILLE, TENNESSEE.

FILLED-SACK-SEWING- MACHINE.

Specification of Letters Patent.

Patented Jan. 17, 1922.

Application filed August 6, 1920. Serial No. 401,609.

To all whom it may concern."

Be it known that I, CARL Gr. THoMrsoN, a citizen of the United States, residing at Knoxville, in the county of Knox and State of Tennessee, have invented certain new and useful Improvements in F illed-Sack-Sewing Machines, of which the following is a specification.

This invention relates to means for sewing up the open ends of sacks which have previously been filled with any desired material; and it consists in the novel construction and combination of the parts hereinafter fully described and claimed whereby sacks of different heights are sewed up with facility and are subsequently graded or sorted according to their height.

In the drawings, Figure 1 is a front view of a filled sack sewing machine constructed according to this invention. Fig. 2 is an end view of the same, taken in section on the line 2-2 in Fig. 1. Fig. 3 is a sectional plan view of portions of the machine taken on the line 3-3 in Fig. 1. Fig. 4 is a plan view of the discharging arms and one end portion of the conveyor.

A stationary support 7 for the entire machine is provided, and this support is generally the floor and floor joists of the building in which the machine is placed. A conveyer for supporting the filled sacks is provided, and it may be a flat topped endless conveyer of any approved construction, but in carrying outthis invention the conveyer preferably consists of two similar endless conveyer aprons or belts 8 arranged side by side at an obtuse angle to each other, so that their upper stretches form a channel for receiving and supporting the bottoms of the sacks. \Vhe'n a flat topped conveyor is provided much time is lost in flattening thebottoms of the filled sacks so that the sacks will stand upright on the conveyor without falling over. Thesaoks are filled in any approved way. and they will stand upright in the channel formed by the two stretches without any special preparation.

An open space or channel is formed between the lower and adjacent edges of the top stretches of the two belts 8, and the middle parts of the bottoms of the sacks are free to bulge into this space as shown in Fig. 2.

Thetwo aprons or belts 8 are driven s1- multaneously in the same direction and at the same speed by any suitable driving mechanism- Similar rollers 9 are pr vided at each end of the aprons, and the rollers at one end are provided with beveled toothed wheels 10 on the lower end portions of their shafts 12. These wheels are driven by means of beveled toothed wheels 14 secured on a countershaft 15, and the countershaft has a worm wheel 16 secured on it. A worm 17 is provided for driving the worm wheel, and is secured on a main driving shaft 18. The above men tioned shafts are journaled in any suitable stationary bearings, and the main driving shaft 18 is revolved by any approved engine or motor. Stationary brackets 23 having inclined top portions 22 are provided for supporting the intermediate portions of :the upper stretches of the conveyor aprons.

A crosshead 24 is provided, and has a vertical upright 25 for supporting the sewing mechanism secured to one end portion of it, and arranged to slide in a guide 26 secured to the support or floor 7. The crosshead is arranged in the room or chamber below the floor 7, and a platform 27 for the operator is secured by an upright 27, to its other end portion. This platform is secured to a slide 28 which slides vertically in a guide 29 secured to the support or floor 7. The slide and guide are preferably square in crosssection, but they may be cylindrical, or of any other shape which will work satisfactorily.

A frame 30 is secured to the floor 7, and 31 are guide sheaves carried by this frame. Counterbalance weights 81 for the crosshead and the parts connected to it are provided. and are secured to the ends of cords 32 which pass over the sheaves 31, and have their other ends secured to the crosshead. The crosshead is raised and lowered by means of any approved mechanism or device for that purpose, and in the form of the luvention shown a screw 34 is provided. This screw engages with a screwthreaded hole 35 at the iniddlepart of the crosshead 24. The upper end portion 36 of the screw revolves in a bearing 37 on the frame 30, and its lower end portion revolves in a stationary step 38. A beveled friction wheel 40 is secured on the screw at a little distance above the step.

A countershaft 42 is arranged to slide longitudinally in stationary bearings 43, and is provided with a pulley 44 for driving it from the maindriving shaft 18, by a belt 45. Two beveled friction wheels 46 are secured on the counter-shaft 42, and are arranged one on each of the friction wheel hwhen filled they are placed on the conveyor, and are moved by itunder the sew mg meeh 40. The screw is revolved to raise and lower the crosshead by placing the wheels 4:6 in engagement alternately with'the wheel -10, and the shaft 4-2 is slid longitudinally by the operator by means of a lever -17 and intermediate connections. The perator stands on the platform 27, and 48 is a back rest forhim to lean against. The lever 47 is pivoted to the crossliead by a pin 50, and it has a longitudinal slot 51 in its lower end portion'. The upper end or handle portion 49 of the lever extends through the guide 29,

I crosshead. I

The sewing mechanism is secured to the upper and curved end portion 61 of the upright 25, and is of any approved sort suitable for sewing upthe tops of the sacks. This sewing mechanism can advantageously be driven by an electric motor 62 carried by the upright 25. p

The sacks are of various heights, and.

anism to the position indicated by the dotted lines 63. The angular shape of the channel positions the sacks relatively to the sewing mechanism. The conveyor is not stopped while the crosshead is operated to adjust the sewing mechanism to the height of the sack. The crosshead adjusts the platform,

which supports the operator, simultaneously with the sewing mechanism, so that the op- --e r ator is always in the same relative position with respect to the sewing mechanism, and 1S able to work it to the best advantage.

.When the top of the sari; has been sewed up and closed, the conveyor carries the sack from under the sewing mechanism and dischargesit. Stationary vertical standards (35 are provided, and are arranged at different distances from the sewing mechanism at the sides of the conveyor. These uprights have horizontal arms 66 secured to themat difi'er- Hent' levels above the conv'yer, and these arms project diagonally across the upper stretches of the conveyor in the path of the.

sacks. The arms are adjustable vertically on the standards, and are securedby set screws67 or other fastening devices. As

many standards are provided as will sort thesacks into the desired number of grades. The'highest sacks strike the arm of the first standard which is arranged the'highest abovethe'conveyer, and are tlllZBCl'OVQI and thrown off the conveyer. Shorter sacks, are

port for the sacks, a crosshead arranged below the sack support, a vertical upright and a platform for the operator carried by the said crosshead, sewing mechanism carried by the said upright and arranged above the sack support, and. lifting mechanism for raising and lowering the erosshea-d and thereby simultaneously adjusting the position of the platform and the sewing mechanism relative to the sack support.

2. In a filled sack sewing machine, asup port for the sacks, a crosshead extending crosswisennderithe sack support, a vertical upright and a platform for the operator carried by the opposite end portions of the crosshead and arranged one on each side of the sack support, sewingmechanism carried by the said upright and arranged above the sack support, and lifting mechanism for adjusting the position of the crosshead vertically relative to the sacksupport.

3. In a filled sack sewing machine, a stal tionary support, a support for the sacks ar ranged, above the stationary support, a

cros'shea-d arranged below the stationary support, a vertical upright and a. platform for the operatorcarried by the said crosshead, guides for the said upright and plat form carried by the stationary support, sewing mechanism carried by the said upright and arranged above the sack "support, and lifting mechanismrfor adjusting the position of the crosshead vertically relative to the sack support. I

4. In a filled sack sewing machine, a support for the sacks, a crosshead extending crosswise under the sacksupper-ha vertical upright and a platformjfor'the operator carriedby the opposite end portions of the crosshead and arranged one on each side of the :sack support, sewing mechanism carried by the said upright and ar 'anged above the sack support, ascrew engaging with the middle part'of the'crosshead, and meansfor 5. In a filled sack sewing machine,a suprevolving the said screw so as to adjustthe port for the sacks,a crossheadarranged be;-

low thesaid support, a vertical upright" and a platform for the operator. carried by the said cros'shead, sewing mechanism carried by thesaid upright and'arrangedabove the, sack support, ascrew engaging withfithe crosshead driving mechanism for revolving the screw, and means for reversingthe di-.

rection of motion of the iscrew,"said means.

being snpportedby the crosshead andprovided with an end portion which projects above the said platform.

6. In a filled sack sewing machine, a sewing mechanism, an endless traveling conveyer which supports the sacks under the sewing mechanism and permits them to be tilted over laterally, and a stationary discharging arm arranged diagonally over the conveyer in the path of the upper portions of the sacks and adapted to tilt the sacks laterally off the conveyer at one side thereof as the 'sacks are pressed into contact with it by the conveyer.

7. In a filled sack sewing machine, a sewing mechanism, an endless traveling conveyer which supports the sacks under the sewing mechanism and permits them to be tilted over laterally, and stationary discharging arms arranged diagonally over the conveyer at different levels and adapted to tilt the sacks laterally off the conveyor at different points of its length according to the height of the sacks.

8. In a filled sack sewing machine, a sewing mechanism, an endless traveling conveyer which supports the sacks under the sewing mechanism, stationary standards arranged adjacent to the conveyer, and discharging arms secured to the standards at different levels and projecting diagonally across its upper stretch."

In testimony whereof I have aflixed my signature.

CARL G. THOMPSON. 

